Update: The price has changed to $15.98 since this was originally published.

Small bedrooms or desks benefit most from this one, since it combines a cool mist humidifier with an essential oil diffuser in a single compact unit. Walmart has it at $14.59, which is $6.40 off the $20.99 list price. Buy Now at Walmart

Update: The price has dropped to $155.89 since this was originally published.

Damp basements and laundry rooms are where this one earns its keep, pulling moisture continuously without needing you to drag a bucket around constantly. At $158.89, that's $121.10 off the $279.99 list price. Buy Now at Walmart

Keeps smaller rooms or closets free of damp and musty odors without the bulk of a full-size unit, and at $40, that's $51 off the $91 list price. Buy Now at Walmart

Update: The price has changed to $84.99 since this was originally published.

Keeping a basement or large room dry without constant tank-emptying is easier with the 800-sq.ft. coverage and 95-oz tank on this one, and at $83 it's $217 off the $300 list price. Buy Now at Walmart

Basement and laundry room owners dealing with persistent dampness will get the most use out of this 50-pint capacity, and at $125 it's $115 off the $240 list price. Buy Now at Walmart

Moisture control in basements or laundry rooms gets easier with coverage for up to 1,000 square feet, and at $62.89, that's $77 off the $139.99 list price. Buy Now at Walmart

Handy for bedrooms or offices where dry air is an issue, since the 4-liter tank means you're not refilling it every night, and it's currently $33 off the $75 list price at Walmart. Buy Now at Walmart

Damp basements and laundry rooms benefit most from the 32-pint capacity and Wi-Fi app controls that let you check humidity levels without walking downstairs, and Walmart has it marked down to $136, a $164 (55%) cut off the $300 list price. Buy Now at Walmart

Basement or crawlspace owners dealing with persistent moisture will get the most use out of this one, since 70-pint commercial units can keep up with larger spaces that smaller dehumidifiers struggle to handle; it's $33.49 off the list price at Walmart. Buy Now at Walmart

Basements, storage units, or other large spaces with persistent moisture problems call for this kind of commercial-grade capacity, pulling far more water per day than a standard home unit. It's currently $48 off the $482 list price at Walmart. Buy Now at Walmart

Dry air in bedrooms or offices is the main target here, since the 1.5L tank runs quietly through the night without needing a refill. Walmart has it for $19.89 right now, $16.10 off the $35.99 list price. Buy Now at Walmart

Handy for basements or damp rooms up to 2,500 sq. ft. where you're dealing with musty smells or condensation, and Walmart has it marked down to $95, which is $65 off the $160 list price. Buy Now at Walmart

This 1.32-gallon tank runs long enough to skip overnight refills, which suits bedrooms or smaller offices where you want steady humidity without checking on it constantly. It's $5 off the $40 list price at Walmart. Buy Now at Walmart

Handy for small desks or bedside tables where you want a bit of added moisture without a bulky unit taking up space, and Walmart has it marked down to $13.79 from $16.99. Buy Now at Walmart

This 8L tank suits larger rooms or multi-day use without refilling, and the option to switch between warm and cool mist covers you in any season; it's $99 off the list price at Walmart. Buy Now at Walmart

This 5-liter tank means fewer refills, which suits larger rooms or anyone who doesn't want to top it off daily, and Walmart has it marked down $54 from the $99 list price. Buy Now at Walmart

Keeping small spaces like closets, bathrooms, or RVs free of excess moisture is the main job here, so it suits anyone dealing with a musty room rather than a whole basement. Walmart has it for $69.89, which is $46.10 off the $115.99 list price. Buy Now at Walmart

Dealing with a damp basement or crawl space gets easier with a dehumidifier pulling 70 pints a day, enough coverage for larger or consistently humid rooms. Walmart has it for $159.99, which is $140 off the $299.99 list price. Buy Now at Walmart

Basement and damp-room dwellers will get the most out of this one, since 30 pints a day covers larger spaces without constant tank emptying. Walmart has it for $98, a $112 cut off the $210 list price. Buy Now at Walmart

Bedrooms and larger living spaces benefit most from the 4.5L tank, since it can run through the night without needing a refill, and the current price of $36 is exactly half the $73 list price. Buy Now at Walmart